lane assist MERCEDES-BENZ SLC 2019 Owners Manual

Data
see Technical data
Data carrier
Selecting ........................................ 173
Daytime running lamps
Display message ............................ 193
Function/notes ................................ 97
Switching on/off (on-board com-
puter) .............................................176
Declarations of conformity................. 26
Decorative film
Cleaning instructions ..................... 248
Delayed switch-off
Exterior lighting (on-board com-
puter) ............................................. 177
Interior lighting .............................. 177
Diagnostics connection......................27
Digital Operator's Manual
Help .................................................22
Introduction .....................................22
Digital speedometer.........................171
Display messages
ASSYST PLUS ................................ 244
Calling up (on-board computer) ..... 182
Driving systems .............................197
Engine ............................................ 194
General notes ................................ 182
Hiding (on-board computer) ........... 182
KEYLESS-GO .................................. 207
Lights ............................................. 193
Safety systems .............................. 183
SmartKey ....................................... 206
Tires ............................................... 201
Vehicle ...........................................203
Distance recorder
see Odometer
see Trip odometer
Distance warning (warning lamp).... 215
Distance warning function
Function/notes ................................ 58
Doors
Automatic locking (on-board
computer) ...................................... 178
Automatic locking (switch) ...............73
Central locking/unlocking
(SmartKey) .......................................66
Control panel ...................................37
Display message ............................ 205
Emergency locking ........................... 73
Emergency unlocking ....................... 73
Important safety notes.................... 71
Opening (from inside) ...................... 72
Overview .......................................... 71
Drinking and driving......................... 137
Drive program
Automatic transmission ................. 128
Display ........................................... 125
SETUP (on-board computer,
Mercedes-AMG vehicles) ............... 180
Driver's door
see Doors
Driving
Towing vehicles ............................. 124
Driving abroad
Mercedes-Benz Service ................. 245
Driving on flooded roads.................. 141
Driving safety system
Active Brake Assist .......................... 58
Driving safety systems
ABS (Anti-lock Braking System) ....... 57
ADAPTIVE BRAKE............................. 64
Adaptive Brake Assist ...................... 59
Adaptive brake lights ....................... 60
BAS (Brake Assist System) .............. 57
Distance warning function ............... 58
EBD (electronic brake force dis-
tribution) .......................................... 63
ESP®(Electronic Stability Pro-
gram) ............................................... 60
Important safety information ........... 57
Overview .......................................... 56
Driving system
AMG sports suspension
(Mercedes-AMG SLC 43) ............... 152
Driving systems
Adaptive Damping System ............. 152
ATTENTION ASSIST ........................ 162
Blind Spot Assist ............................ 163
Cruise control ................................ 142
Display message ............................ 197
DISTRONIC PLUS ........................... 144
HOLD function ............................... 151
Lane Keeping Assist ...................... 165
Lane Tracking package .................. 163
Parking Guidance ........................... 156
PARKTRONIC ................................. 153
8Index

Kickdown
Driving tips .................................... 128
Manual gearshifting .......................131
Knee bag.............................................. 44
L
Lamps
see Warning and indicator lamps
Lane Keeping Assist
Activating/deactivating ................. 175
Display message ............................ 198
Function/information.................... 165
Lap time (RACETIMER)...................... 180
License plate lamp (display mes-
sage)................................................... 193
Light function, active
Display message ............................ 193
Light sensor (display message)....... 193
Lights
Activating/deactivating the inte-
rior lighting delayed switch-off ....... 177
Active light function ....................... 100
Automatic headlamp mode .............. 97
Cornering light function ................... 99
Hazard warning lamps ..................... 99
High beam flasher ............................ 99
High-beam headlamps..................... 99
Light switch ..................................... 97
Low-beam headlamps...................... 98
Parking lamps .................................. 98
Rear fog lamp .................................. 98
Setting the brightness of the
ambient lighting (on-board com-
puter) ............................................. 177
Standing lamps ................................ 98
Switching the daytime running
lamps on/off (on-board com-
puter) ............................................. 176
Switching the exterior lighting
delayed switch-off on/off (on-
board computer) ............................ 177
Switching the surround lighting
on/off (on-board computer) .......... 177
Turn signals ..................................... 99
see Interior lighting
see Replacing the bulbs
Locking
see Central locking
Locking (doors)
Automatic ........................................ 73
Emergency locking ........................... 73
From inside (central locking but-
ton) .................................................. 72
Locking centrally
see Central locking
Locking verification signal (on-
board computer)............................... 178
Low-beam headlamps
Display message ............................ 193
Replacing bulbs............................. 102
Switching on/off.............................. 98
Luggage cover
see Trunk partition
Lumbar support................................... 88
M
M+S tires............................................ 269
MAGIC SKY CONTROL......................... 83
Malfunction message
see Display messages
Matte finish (cleaning instruc-
tions).................................................. 248
Mechanical key
Function/notes................................ 68
General notes .................................. 68
Inserting .......................................... 68
Locking vehicle ................................ 73
Removing ......................................... 68
Unlocking the driver's door .............. 73
Media Interface
see Digital Operator's Manual
Memory card (audio)......................... 173
Memory function................................. 95
Mercedes me connect
Call priority .................................... 233
General notes ................................ 230
Info call button .............................. 233
Mercedes-Benz emergency call ..... 231
Remote Vehicle Health Check ....... 233
Roadside Assistance call button .... 232
Self-diagnosis ................................ 230
System .......................................... 230
12Index

REBD (ElectronicBrake forceDistribution)(Ypage 63)
RADAPTIVE BRAKE (Ypage 64)
Important safety notes
If you fail to adapt your driving style or if youare inattentive, the driving safety systems canneither reduce the risk of an accident noroverride the laws of physics. Driving safetysystems are merely aids designed to assistdriving.
You are responsible for maintaining the dis-tance to the vehicle in front, for vehicle speed,for braking in good time, and for staying inlane. Always adapt your driving style to suitthe prevailing road and weather conditions andmaintain a safe distance from the vehicle infront. Drive carefully.
The driving safety systems described onlywork as effectively as possible when there isadequate contact between the tires and theroad surface. Pay particular attention to theinformation regarding tires, recommendedminimum tire tread depths etc. in the "Wheelsand tires" section (Ypage 267).
In wintry driving conditions, always use wintertires (M+S tires) and if necessary, snowchains. Only in this way will the driving safetysystems described in this section work aseffectively as possible.
ABS (Anti-lock Braking System)
General information
ABS regulates brake pressure in such a waythat the wheels do not lock when you brake.This allows you to continue steering the vehi-cle when braking.
The%ABS warning lamp in the instrumentcluster lights up when the ignition is switchedon. It goes out when the engine is running.
ABS works from a speed of about 5 mph(8 km/h), regardless of road-surface condi-tions. ABS works on slippery surfaces, evenwhen you only brake gently.
Important safety notes
iObserve the "Important safety notes" sec-tion (Ypage 57).
GWARNING
If ABS is malfunctioning, the wheels could
lock when braking. The steerability and
braking characteristics would be severely
affected. There is an increased danger of
skidding and accidents.
Drive on carefully. Have ABS checked imme-
diately at a qualified specialist workshop.
When ABS is malfunctioning, other systems,including driving safety systems, will alsobecome inoperative. Observe the informationon the ABS warning lamp (Ypage 210) anddisplay messages which may be shown in theinstrument cluster (Ypage 183).
Brakes
XIf ABS intervenes:continue to depress thebrake pedal vigorously until the braking sit-uation is over.
XTo make a full brake application:depressthe brake pedal with full force.
If ABS intervenes when braking, you will feel apulsing in the brake pedal.
The pulsating brake pedal can be an indicationof hazardous road conditions, and functions asa reminder to take extra care while driving.
BAS (Brake Assist System)
General information
BAS operates in emergency braking situations.If you depress the brake pedal quickly, BASautomatically boosts the braking force, thusshortening the stopping distance.
Important safety notes
iObserve the "Important safety notes" sec-tion (Ypage 57).
Driving safety systems57
Safety
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The cornering lamp may remain lit for a shorttime, but is automatically switched off after nomore than three minutes.
Cornering light function with traffic circlefunction:
The cornering light function is activated onboth sides before entering a traffic circlethrough an evaluation of the current GPS posi-tion of the vehicle. It remains active until afterthe vehicle has left the traffic circle. In thisway, pedestrians crossing the road, for exam-ple, are illuminated by your vehicle in goodtime.
Active light function
The active light function is a system thatmoves the headlamps according to the steer-ing movements of the front wheels. In thisway, relevant areas remain illuminated whiledriving. This allows you to recognize pedes-trians, cyclists and animals sooner.
Active:when the lights are switched on.
Vehicles with Lane Keeping Assist: the activelight function evaluates the course of the lanein which you are driving and pre-emptivelycontrols the active light function.
Adaptive Highbeam Assist
General notes
You can use this function to set the headlampsto change between low beam and high beamautomatically. The system recognizes vehicleswith their lights on, either approaching fromthe opposite direction or traveling in front ofyour vehicle, and consequently switches theheadlamps from high beam to low beam.
The system automatically adapts the low-beamheadlamp range depending on the distance tothe other vehicle. Once the system no longerdetects any other vehicles, it reactivates thehigh-beam headlamps.
The system's optical sensor is located behindthe windshield near the overhead controlpanel.
Important safety notes
GWARNING
Adaptive Highbeam Assist does not recog-
nize road users:
Rwho have no lights, e.g. pedestrians
Rwho have poor lighting, e.g. cyclists
Rwhose lighting is blocked, e.g. by a barrier
On very rare occasions, Adaptive Highbeam
Assist may fail to recognize other road users
that have lights, or may recognize them too
late. In this, or in similar situations, the auto-
matic high-beam headlamps will not be
deactivated or will be activated regardless.
There is a risk of an accident.
Always carefully observe the traffic condi-
tions and switch off the high-beam head-
lamps in good time.
Adaptive Highbeam Assist cannot take intoaccount road, weather or traffic conditions.Adaptive Highbeam Assist is only an aid. Youare responsible for adjusting the vehicle'slighting to the prevailing light, visibility andtraffic conditions.
In particular, the detection of obstacles can berestricted if there is:
Rpoor visibility, e.g. due to fog, heavy rain orsnow
Rdirt on the sensors or the sensors areobscured
Switching Adaptive Highbeam Assist
on/off
XTo switch on:turn the light switch toX.
XPress the combination switch beyond thepressure point in the direction of arrowC.The

As a result, Active Distance Assist
DISTRONIC may neither give warnings nor
intervene in such situations. There is a risk
of an accident.
Always pay careful attention to the traffic
situation and be ready to brake.
GWARNING
Distance keeping assistant cannot always
clearly identify other road users and com-
plex traffic situations.
In such cases, distance keeping assistant
can:
Raccelerate or brake the vehicle unexpect-
edly
Rintervene unexpectedly
There is a risk of an accident.
Continue to drive carefully and be ready to
brake, especially if distance keeping assis-
tant warns you.
GWARNING
Active Distance Assist DISTRONIC brakes
your vehicle with up to 50% of the maximum
possible deceleration. If this deceleration is
not sufficient, Active Distance Assist
DISTRONIC alerts you with a visual and
acoustic warning. There is a risk of an acci-
dent.
Adjust your speed in these cases and main-
tain sufficient distance.
Apply the brakes yourself and/or take eva-
sive action.
!When Active Distance Assist DISTRONICor the HOLD function is activated, the vehi-cle brakes automatically in certain situa-tions.
To avoid damage to the vehicle, deactivateActive Distance Assist DISTRONIC and theHOLD function in the following or similar sit-uations:
Rwhen towing the vehicle
Rin the car wash
Active Distance Assist DISTRONIC can neitherreduce the risk of an accident if you fail to
adapt your driving style, nor override the lawsof physics. Active Distance Assist DISTRONICcannot take into account road, weather or traf-fic conditions. Active Distance AssistDISTRONIC is only an aid. You are responsiblefor the distance to the vehicle in front, forvehicle speed, for braking in good time and forstaying in your lane.
Do not use Active Distance Assist DISTRONIC:
RIn road and traffic conditions which do notallow you to maintain a constant speed, e.g.in heavy traffic or on winding roads
Ron slippery road surfaces. Braking or accel-erating could cause the drive wheels to losetraction and the vehicle could then skid
RIn poor visibility, e.g. due to fog, heavy rainor snow
Active Distance Assist DISTRONIC may notdetect narrow vehicles driving in front, e.g.motorcycles, or vehicles driving in a staggeredformation.
In particular, the detection of obstacles can beimpaired if:
RThere is dirt on the sensors or anything elsecovering the sensors
RThere is snow or heavy rain
RThere is interference by other radar sources
RThere are strong radar reflections, for exam-ple in parking garages
If Active Distance Assist DISTRONIC no longerdetects a vehicle in front, Distance PilotDISTRONIC may unexpectedly accelerate tothe speed stored.
This speed may:
RBe too high if you are driving in a turninglane or an exit lane
RBe so high when driving in the right-handlane that you overtake vehicles in the left-hand lane
RBe so high in the left lane that you passvehicles driving on the right
If there is a change of drivers, advise the newdriver of the speed stored.
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iThe last speed stored remains stored untilyou switch off the engine.
iActive Distance Assist DISTRONIC is notdeactivated if you depress the acceleratorpedal. If you accelerate to overtake, ActiveDistance Assist DISTRONIC adjusts the vehi-cle's speed to the last speed stored afteryou have finished overtaking.
Active Distance Assist DISTRONIC is automati-cally deactivated if:
Ryou engage the electric parking brake or ifthe vehicle is automatically secured with theelectric parking brake
RESP®intervenes or you deactivate ESP®
Rthe transmission is in position],^or\\
Ryou pull the cruise control lever towards youin order to pull away and the front-passenger door is open
Ryou activate Active Parking Assist
Rthe vehicle is skidding
If Active Distance Assist DISTRONIC is deacti-vated automatically, you will hear a warningtone. TheActive Distance Assist OffActive Distance Assist Offmessage will appear on the multifunction dis-play for approximately five seconds.
Tips for driving with Active Distance
Assist DISTRONIC
General notes
The following contains descriptions of certainroad and traffic conditions in which you mustbe particularly attentive. In such situations,brake if necessary. Active Distance AssistDISTRONIC will then be deactivated.
Cornering, going into and coming out of
a bend
The ability of Active Distance AssistDISTRONIC to detect vehicles when corneringis limited. Your vehicle may brake unexpect-edly or late.
Vehicles traveling on a different line
Active Distance Assist DISTRONIC may notdetect vehicles that are not driving in the mid-dle of their lane. The distance to the vehicle infront will be too short.
Other vehicles changing lanes
Active Distance Assist DISTRONIC has notdetected the vehicle cutting in yet. The dis-tance to this vehicle will be too short.
Narrow vehicles
150Driving systems
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Active Distance Assist DISTRONIC has not yetdetected the vehicle in front on the edge ofthe road because of its narrow width. The dis-tance to the vehicle in front will be too short.
Obstructions and stationary vehicles
Active Distance Assist DISTRONIC does notbrake for obstacles or stationary vehicles. If,for example, the detected vehicle turns a cor-ner and an obstacle or stationary vehicle isrevealed, Active Distance Assist DISTRONICwill not brake for them.
Crossing vehicles
Active Distance Assist DISTRONIC may mis-takenly detect vehicles that are crossing yourlane.
If you activate Active Distance AssistDISTRONIC under the following conditions, thevehicle could pull away unintentionally:
Rat traffic lights with crossing traffic, forexample
Rif there is a vehicle in front, after a crossing,with the HOLD function activated
HOLD function
General notes
The HOLD function can assist the driver in thefollowing situations:
RWhen pulling away, especially on steepslopes
RWhen maneuvering on steep slopes
RWhen waiting in traffic
The vehicle is kept stationary without thedriver having to depress the brake pedal.
The braking effect is canceled and the HOLDfunction deactivated when you depress theaccelerator pedal to pull away.
Important safety notes
GWARNING
If the vehicle is only braked using the HOLD
function, the vehicle may roll away in the fol-
lowing situations when you leave the vehi-
cle:
Rif there is a malfunction in the system or
in the voltage supply
Rif the HOLD function is deactivated by
depressing the accelerator pedal or brake
pedal, e.g. by a vehicle occupant
There is a risk of an accident.
Always deactivate the HOLD function and
secure the vehicle against rolling away
before you leave it.
!When Active Distance Assist DISTRONICor the HOLD function is activated, the vehi-cle brakes automatically in certain situa-tions.
To avoid damage to the vehicle, deactivateActive Distance Assist DISTRONIC and theHOLD function in the following or similar sit-uations:
Rwhen towing the vehicle
Rin the car wash
Deactivating the HOLD function (Ypage 152).
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ATTENTION ASSIST assesses your level of fati-gue or lapses in concentration by taking thefollowing criteria into account:
Ryour personal driving style, e.g. steeringcharacteristics
Rjourney details, e.g. time of day and lengthof journey
The functionality of ATTENTION ASSIST isrestricted and warnings may be delayed or notoccur at all:
Rif the road condition is poor, e.g. if the sur-face is uneven or if there are potholes
Rif there is a strong side wind
Rif you have adopted a sporty driving stylewith high cornering speeds or high rates ofacceleration
Rif you are predominantly driving slower than50 mph (80 km/h) or faster than 112 mph(180 km/h)
Rif you are currently using COMAND or mak-ing a telephone call with it
Rif the time has been set incorrectly
Rin active driving situations, such as whenyou change lanes or change your speed
ATTENTION ASSIST is only an aid to the driver.It might not always recognize fatigue orincreasing inattentiveness in time or fail torecognize them at all. The system is not a sub-stitute for a well-rested and attentive driver.
Warning and display messages in the
multifunction display
XActivate ATTENTION ASSIST using the on-board computer (Ypage 175).
If ATTENTION ASSIST is active, you will bewarned no sooner than 20 minutes afteryour journey has begun. You then hear anintermittent warning tone twice and theATTENTION ASSIST: Take a Break!ATTENTION ASSIST: Take a Break!mes-sage appears in the multifunction display.
XIf necessary, take a break.
XPress thevor8button to confirmthe message.
On long journeys, take regular breaks in goodtime to allow yourself to rest properly. If youdo not take a break and ATTENTION ASSISTstill detects increasing lapses in concentra-tion, you will be warned again after 15 minutesat the earliest.
ATTENTION ASSIST is reset when you continueyour journey and starts assessing your tired-ness again if:
Ryou switch off the engine
Ryou take off your seat belt and open thedriver's door, e.g. for a change of drivers orto take a break
When ATTENTION ASSIST is deactivated, the

Important safety notes
GWARNING
Blind Spot Assist does not react to:
Rvehicles overtaken too closely on the side,
placing them in the blind spot area
Rvehicles which approach with a large
speed differential and overtake your vehi-
cle
As a result, Blind Spot Assist may not give
warnings in such situations. There is a risk
of an accident.
Always observe the traffic conditions care-
fully, and maintain a safe lateral distance.
Blind Spot Assist is only an aid. It may fail todetect some vehicles and is no substitute forattentive driving. Always ensure that there issufficient distance to the side for other roadusers and obstacles.
iUSA only:
This device has been approved by the FCCas a "Vehicular Radar System". The radarsensor is intended for use in an automotiveradar system only. Removing, tamperingwith, or altering the device will void any war-ranties, and is not permitted by the FCC. Donot tamper with, alter, or use in any non-approved way.
Any unauthorized modification to this devicecould void the user’s authority to operatethe equipment.
Radar sensors
The radar sensors for Blind Spot Assist areintegrated into the rear bumper. Make surethat the bumpers are free from dirt, ice orslush. The sensors must not be covered, forexample by cycle racks or overhanging loads.Following a severe impact or in the event ofdamage to the bumpers, have the function ofthe radar sensors checked at a qualified spe-cialist workshop. Blind Spot Assist may no lon-ger work properly.
Monitoring range of the sensors
In particular, the detection of obstacles can beimpaired if:
Rthere is dirt on the sensors or anything elsecovering the sensors
Rthere is poor visibility, e.g. due to fog, heavyrain, snow or spray
Rthere are narrow vehicles, e.g. motorcyclesor bicycles
Rthe road has very wide lanes
Rthe road has narrow lanes
Ryou are not driving in the middle of the lane
Rthere are barriers or other road boundaries
Vehicles in the monitoring range are then notindicated.
Blind Spot Assist monitors the area up to 10 ft(3.0 m) behind your vehicle and directly nextto your vehicle, as shown in the diagram. Forthis purpose, Blind Spot Assist uses radar sen-sors in the rear bumper.
If the lanes are narrow, vehicles driving in thelane beyond the lane next to your vehicle maybe indicated, especially if the vehicles are notdriving in the middle of their lane. This may bethe case if there are vehicles driving at theinner edge of their lanes.
Due to the nature of the system:
Rwarnings may be issued in error when driv-ing close to crash barriers or similar solidlane borders.
Rwarnings may be interrupted when drivingalongside long vehicles, e.g. trucks, for aprolonged time.
164Driving systems
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Indicator and warning display
CYellow indicator lamp/red warning lamp
Blind Spot Assist is not active at speeds belowapproximately 20 mph (30 km/h). Vehicles inthe monitoring range are then not indicated.
When Blind Spot Assist is activated, indicatorlampCin the exterior mirrors lights up yellowat speeds of up to 20 mph(30 km/h). Atspeeds above 20 mph (30 km/h), the indicatorlamp goes out and Blind Spot Assist is opera-tional.
If a vehicle is detected within the blind spotmonitoring range at speeds above 20 mph(30 km/h), warning lampCon the corre-sponding side lights up red. This warning isalways emitted when a vehicle enters the blindspot monitoring range from behind or from theside. When you overtake a vehicle, the warningonly occurs if the difference in speed is lessthan 7 mph (12 km/h).
The yellow indicator lamp goes out if reversegear is engaged. In this event, Blind SpotAssist is no longer active.
The brightness of the indicator/warning lampsis adjusted automatically according to theambient light.
Collision warning
If a vehicle is detected in the monitoring rangeof Blind Spot Assist and you switch on the cor-responding turn signal, a double warning tonesounds. Red warning lampCflashes. If theturn signal remains on, vehicles detected areindicated by the flashing of red warninglampC. There are no further warning tones.
Switching on Blind Spot Assist
XMake sure that Blind Spot Assist(Ypage 175) is activated in the on-boardcomputer.
XTurn the SmartKey to positionHin the igni-tion lock.Warning lampsCin the exterior mirrorslight up red for approximately 1.5 secondsand then turn yellow.
Lane Keeping Assist
General notes
Lane Keeping Assist monitors the area in frontof your vehicle with cameraC, which ismounted at the top of the windshield. LaneKeeping Assist detects lane markings on theroad and warns you before you leave your laneunintentionally.
If you selectkmkmon the on-board computer intheDisplay Unit Speed-/OdometerDisplay Unit Speed-/Odometerfunc-tion (Ypage 176), Lane Keeping Assist isactive starting at a speed of 60 km/h. If themilesmilesdisplay unit is selected, the assistancerange begins at 40 mph.
A warning may be given if a front wheel passesover a lane marking. It will warn you by meansof intermittent vibration in the steering wheelfor up to 1.5 seconds.
Important safety notes
GWARNING
Lane Keeping Assist cannot always clearly
detect lane markings.
In such cases, Lane Keeping Assist can:
Rgive an unnecessary warning
Rnot give a warning
There is a risk of an accident.
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